₹400 crore is being provided to vaccine candidates from Zydus Cadilla, Biological E, Gennova and Bharat Biotech (single-dose intranasal vaccine) New Delhi, Apr 21 (PTI) Efforts are being ramped up for massive production of vaccines and make them available in the shortest possible time, a top government official said on Wednesday, stressing that India currently has a promising pipeline of four-five COVID-19 vaccine candidates, while three have already been approved for emergency use.Department of Biotechnology Secretary Renu Swarup said a financial support of ₹400 crore is being provided to vaccine candidates from Zydus Cadilla, Biological E, Gennova and Bharat Biotech (single-dose intranasal vaccine).Her statement came days after the.